State Sen. Suzanne Bonamici, a Democrat who represents Northwest Portland, Washington County communities north of U.S. 26 and parts of Beaverton, has now officially launched a website to solicit campaign contributions to run for Wu's seat.

A message on the site says Bonamici won't have a formal announcement for a few days, however. And Bonamici did not return a phone call about the site Friday evening.

Oregon Labor Commissioner Brad Avakian and state Rep. Brad Witt, D-Clatskanie, are also running as Democrats for Wu's seat. No Republican candidate has formally stepped forward. And it is not yet clear when a special election will occur to replace Wu.